基於標識分離映射的移動切換機制的設計與實現

Abstract

傳統互聯網設計之初是為固定終端服務，對移動性的支援不好。一體化網路引入接入標識、交換路由標識以及接入標識與交換路由標識之間的分離映射機制，增強網路對移動性的支援。本文在一體化網路的體系結構基礎上，設計一種基於網路的移動切換方案，具體包括了移動性檢測、認證和授權、位置更新三部分。同時在Linux平臺上對移動切換機制進行了實現，並且通過分析實驗資料得出切換時延取值在23.5ms到35ms之間，表明該移動切換機制能夠滿足一體化網路移動切換的要求。Traditional Internet is originally designed for fixed terminals and cannot provide proper support for mobility. The Universal Network introduces Access Identifier, Switch Route Identifier, and the separating and mapping scheme of Access Identifier and Switch Route Identifier, which can well support mobility. We design a novel network based handoff scheme in the Universal Network. The entire handoff mechanism comprises of three processes: mobility detection, authentication and authorization, and location update. We implement the handoff scheme in Linux platform. The experimental results show that handoff delay between 23.5ms and 35ms, which indicate that it can satisfy the needs of the Universal Network's mobile handoff.